const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const render = require('koa-art-template');
const path = require('path')
const cors = require('koa-cors');

const index = require('./routes/index')
const users = require('./routes/users')
const after = require('./routes/after/after')
const before = require('./routes/before/before')
const websocket = require('./routes/before/websocket');
// error handler
onerror(app)

// middlewares
app.use(bodyparser({
  enableTypes: ['json', 'form', 'text']
}))
app.use(json())
app.use(cors())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))
app.use(require('koa-static')(__dirname + '/node_modules'))

render(app, {
  root: path.join(__dirname, 'views'), //规定视图的位置
  extname: '.html', //后缀名
  debug: process.env.NODE_ENV !== 'production' //是否开启调试模式
})

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})
// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
app.use(after.routes(), after.allowedMethods())
app.use(before.routes(), before.allowedMethods())
app.use(websocket.routes(), websocket.allowedMethods())
// error-handling
app.on('error', (err, ctx) => {
  ctx.body = {
    status: 0,
    message: err
  }
});

module.exports = app
